I know this is a little old but.....
I don't "own" one but work at a radioshack and we decided to "display" one.
They arent bad, its exactly what they are advertising, a very simple MP3 player.
The one downside IMHO is that you cannot choose what song you play, and you cannot go back; only forward. You use the large buttons on the front to change playlists and there is a smaller button on the side that allows you to skip forward. The switch on the top has on, off, and fm radio. You can also use your own micro sd cards, just keep in mind that they will playback in the same order that they are on the card. The 1000 songs are grouped into 6 playlists.
It comes with a top hits card that has the playlists broken into Rock, Country, RnB, Contemporary, Workout, and Chillout. It has a Home/usb adapter, usb cable, and earbuds.
I think its a great deal for the technically challenged because you dont need a computer, its just pop it in and go; or for working out (it has a built in clip that feels pretty solid). Essentially think of it as XM radio without the subscription.
hope this helps
on a side note if you havent purchased one and are planning to, Radioshack will be giving an additional music card of your choice with purchase of the player next month.